Tom, do you have RF interference on your flasher? That is my favorite type of FF..I think yours is a Vexilar. Also wondering what the cone angle is and if the 83Khtz is available on flashers.

I saw one used on a dock in TX and then watched the ice fishing video in the main board...Will they work well in open water over brush?

Then I will have HB,Lowrance & Vexilar or Marcum...